I'm not seing any difference either. Freq. Resp are identical. the only difference I see is, 1db less in each the SPL's.IS the only reason to get these to be able to play louder ? because right now my M80's are loud enough.not sure the cost to upgrade is worth it for me, just to get more volumn. I would love a little more bottom end, definded bottom end. other than that nothing a good sub or two would cure

From a straight performance point of view at normal listening levels, in a normal sized room, with normal amplifier power, and using a subwoofer in your system I would not see any need to get the High Power version. Our main reason for bringing out the High Power versions is a recent resurgence in 2-channel systems. A lot of people are either setting up dedicated stereo systems or listening to their music collection in straight stereo as opposed to using a surround mode. Some of these systems utilize large power amps with no subwoofer; these sorts of setups should definitely use the High Power version. The advantages are a more linear bass below 70 Hz and a much higher maximum SPL before distortion or compression. If you are using your M60s or M80s with a subwoofer crossed over at the standard 80 Hz then these advantages will become somewhat moot. There will still be some advantages in maximum SPL above the 80 Hz crossover point, and if you have big amplification in a big room it is certainly worth considering the High Power version even with the subwoofer always in play.

Hi Ian; thank you for the answer(s). My listening room is about 950 sq ft and ~6000 cu ft. I am very pleased with the M80s but hey... if I can do better for not a lot of money I'm all for it.I do sometimes like to listen very loud and I have two monoblocks pumping 350W/channel, so I think I will benefit from the high power version of the M80.

That is a huge space you have and a lot of power to boot. The High Powered version makes sense in your application. If your current M80s are more than a year old there will be another big benefit in making the change in that you will get the latest crossover with the our most recent upgrades to the family of curves.

Ok. My current setup is, I have the M80's 6months old.I just sold my Anthem MRX500. A few reasons, but love the sound and loved the ARC ( not sure which is better really ARC or Audessey ) I am trying to decide what to order next week the Denon x4000 or Anthems new MRX510 and an external amp,so I am thinking of buying a 300wpc XPA-3 or if I can maybe order the ADA1000 3ch. I just found the MRX500 100wpc just not enough. SO, my room is being built now it is 11.6W x 22L x 8H ...2000cf

I listen to music and music video's in 2ch or 2.2ch. My reciever did allow movie setup and music. I have two bluray players one for movies for 7.2 and the other would switch to 2ch stereo but had to run subs as just didn't find enough uhmph. I would rather however, that said I found a little more boomy at times. I would rather not run subs. But, maybe I just need to upgrade those to EP500's ??

My question is, either the MRX or X4000 allows dual speaker setups. I can congifure for 2.2ch music or 2.0ch music and if watching movies 7.2 with a complete second set of speakers. I think I really like the sat/sub setup with movies.

in my room size with either XPA or ADA power amp at a decent volumn, I am not looking to concert levels or have ears ringing but maybe a little louder than when watching movies ..... would I be better off to keep the M80 and maybe upgrade the subs ?

I don't think that upgrading your M80s to the high power version is really going to give you much extra uhmph over your "regular" pair. I do think that a subwoofer upgrade would benefit your system. If you indeed have Energy ESW10s then EP500s would walk all over them. They are good subs but they are an entry level product and not nearly as linear as the EP500. If you had Energy ESW-V10s then you would be talking about a closer match to the EP500, but none of the Energy subwoofers have DSP control like the EP500.

I've been following Axiom for quite a few years; planning my HT which will hopefully be reality around 2015 (maybe 2016). Not that I would not want it sooner but because the wife and I can not agree on how big the house expansion plan should be (and if a HT should even be in it). Anyway, one of the products I'd like to use is a tactile transducer. The existing ones are ether too expensive (Clark Synthesis Gold and Platinum) or not really great music wise (not that I know I would be able to tell the difference). Given these new high power woofers ... it seems like the next step is to go Infrasonic ...

Would Axiom be interested in a tactile transducer product. I'm sure you guys could produce a good one at 1/2 (1/3?) the price of a Clark.

I’ve been looking to upgrade my 5.1 setup including 5 year old M60 V2s and Epik Empire sub (with vp150 and QS8s). Listening area is 2800 cf with about 12 feet from speakers. The bass is far from weak, but I crave more from my mains. Another sub is probably in order, but I'm reading that the M100s have significantly more bass output than the M80s. Leaning towards the LFR880s...would you recommend the high power versions that have the drivers of the M100s in my case to satisfy what I currently consider a bass deficiency? Listening content is pretty broad from classical to a lot of electronic dance music. With the inclusion of the Axiom amp/dsp with the LFRs, the volume I suspect will go much higher that what I typically have it at with my M60s. Thanks.